Rebuilding non rectangular surfaces

Hi, I’m trying to rebuild a five-sided surface using RebuildSrf (from Lunchbox) but it just gives me a rectangle. Does anyone have ideas on how to rebuild non-rectangular shapes?

Thanks

Looks like the LunchBox RebuildSrf works only with the underlying untrimmed surface.
What are you trying to create? Also please share your GH definition to be able to help.

I am trying to create concave panels that form the sides of a rectangular prism, with the opening of the panels would face out, with the vertexes facing the center of the rectangular prism. After obtaining the surface, I’m planning on using the centroids of each panel to create the curved shape

gh curve test.gh (20.1 KB)